EP3832787A1 - Module de batterie - Google Patents

Module de batterie Download PDF

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Publication number
EP3832787A1
EP3832787A1 EP20211861.8A EP20211861A EP3832787A1 EP 3832787 A1 EP3832787 A1 EP 3832787A1 EP 20211861 A EP20211861 A EP 20211861A EP 3832787 A1 EP3832787 A1 EP 3832787A1
Authority
EP
European Patent Office
Prior art keywords
secondary battery
space
battery module
battery cells
fixed plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP20211861.8A
Other languages
German (de)
English (en)
Inventor
Suk Chul Kim
Yong Uk Kim
Jong Ho Seok
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SK On Co Ltd
Original Assignee
SK Innovation Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SK Innovation Co Ltd filed Critical SK Innovation Co Ltd
Publication of EP3832787A1 publication Critical patent/EP3832787A1/fr
Pending legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
    • A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/342—Non-re-sealable arrangements
    • H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/647—Prismatic or flat cells, e.g. pouch cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6561—Gases
    • H01M10/6562—Gases with free flow by convection only
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • H01M50/155—Lids or covers characterised by the material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • H01M50/291—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs characterised by their shape
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • H01M50/293—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs characterised by the material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/308—Detachable arrangements, e.g. detachable vent plugs or plug systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2200/00—Safety devices for primary or secondary batteries
    • H01M2200/20—Pressure-sensitive devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/10—Batteries in stationary systems, e.g. emergency power source in plant
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present disclosure relates to a battery module.
  • a secondary battery cell is a battery that may be repeatedly charged and discharged because the mutual conversion between chemical energy and electrical energy is reversible.
  • Such a secondary battery cell includes an electrode assembly such as a positive electrode, a negative electrode, a separator and an electrolyte, which are major components of a secondary battery, and a cell body member of a laminated film case protecting the same.
  • an electrode assembly such as a positive electrode, a negative electrode, a separator and an electrolyte, which are major components of a secondary battery, and a cell body member of a laminated film case protecting the same.
  • the electrode assembly generates heat as it goes through the process of charging and discharging, and the temperature increase caused by the heat generation may degrade the performance of the secondary battery cell.
  • the internal pressure of the secondary battery cell may increase, causing the secondary battery cell to ignite.
  • the secondary battery cell may explode with such ignition, and a problem of propagating the flame to other secondary battery cells in the vicinity may also occur.
  • ESS energy storage system
  • Exemplary embodiments provide a battery module in which ignition propagation of a secondary battery cell may be prevented.
  • Exemplary embodiments provide a battery module in which a flame may be reduced when a secondary battery cell is ignited.
  • a battery module includes a cell support unit accommodating at least one or more secondary battery cells, a body frame member on which a plurality of the cell support units are installed, and a cover member disposed between the cell support units adjacent to each other.
  • the cover member includes a fixed plate portion fixed between the cell support units adjacent to each other, and a flip portion connected to the fixed plate portion and disposed between electrode tabs of the secondary battery cells adjacent to each other to separate a space between the electrode tabs externally, the flip portion being pushed by internal gas or flame of the secondary battery cell discharged due to rupturing of the secondary battery cell, to be position-moved so that the space between the electrode tabs communicate externally.
  • the flip portion may be vertically coupled to the fixed plate portion disposed horizontally to the secondary battery cell.
  • the flip portion may isolate the space between the electrode tabs externally, and may be broken and removed from the fixed plate portion by the internal gas or the flame of the secondary battery cell released due to the rupturing of the secondary battery cell.
  • the flip portion may isolate the space between the electrode tabs externally, and may have one end portion coupled to the fixed plate portion, the one end portion being bent by the internal gas or the flame of the secondary battery cell released due to the rupturing of the secondary battery cell.
  • the flip portion may have one end portion, which is coupled to the fixed plate portion and has a wedge groove.
  • the flip portion may have a vent hole having a width that is reduced from an inner surface in contact with the space between the electrode tabs toward an outer surface.
  • the fixed plate portion may be provided with a cell gap formation hole disposed in a central portion to form a space between the cell support units adjacent to each other.
  • the fixed plate portion may be provided with a support tab protruding to be adjacent to the flip portion, one surface of the support tab being provided to be in contact with an inner surface of the flip portion contacting the space between the electrode tabs.
  • the cover member may be formed of polyphenylene sulfide or a material including a thermosetting polymer reinforced with at least glass fiber.
  • the cell support unit may include a cell support member accommodating the secondary battery cell in a side portion, and a case member provided to have a " ⁇ " shape and fitted into at least one of an upper end, a lower end or the upper end and the lower end of the cell support member to surround a side surface of the secondary battery cell.
  • first,” “second,” and “third” may be used herein to describe various members, components, regions, layers, or sections, these members, components, regions, layers, or sections are not to be limited by these terms. Rather, these terms are only used to distinguish one member, component, region, layer, or section from another member, component, region, layer, or section. Thus, a first member, component, region, layer, or section referred to in examples described herein may also be referred to as a second member, component, region, layer, or section without departing from the teachings of the examples.
  • spatially relative terms such as “above,” “upper,” “below,” and “lower” may be used herein for ease of description to describe one element's relationship to another element as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, an element described as being “above” or “upper” relative to another element will then be “below” or “lower” relative to the other element. Thus, the term “above” encompasses both the above and below orientations depending on the spatial orientation of the device. The device may also be oriented in other ways
  • a battery module according to an exemplary embodiment of the present disclosure is provided to prevent the propagation of ignition of a secondary battery cell C, and in another aspect, to reduce the flame when the secondary battery cell C is ignited.
  • the explosion of any one secondary battery cell C may be prevented from propagating to other neighboring secondary battery cells C, thereby preventing chain explosion.
  • FIG. 1 is a perspective view illustrating a battery module according to an exemplary embodiment
  • FIG. 2 is a diagram illustrating a state in which a cover member 30 is disposed between cell support units 10 in the battery module according to an exemplary embodiment
  • FIG. 3 is a perspective view illustrating a portion of the cover member 30 in the battery module according to an exemplary embodiment.
  • the battery module includes a cell support unit 10 in which at least one secondary battery cell C is accommodated, a body frame member 20 on which the plurality of cell support units 10 are installed, and a cover member 30 disposed between the cell support units 10 adjacent to each other.
  • the cover member 30 may include a fixed plate portion 31 fixed between the cell support units 10 adjacent to each other, and a flip portion 32 connected to the fixed plate portion 31 and disposed between electrode tabs E of the secondary battery cells C adjacent to each other to separate the space between the electrode tabs E from externally thereof, the flip portion 32 being pushed by the internal gas or flame of the secondary battery cell C released due to the rupturing of the secondary battery cell C, to be moved that the space between the electrode tabs E communicates externally.
  • the battery module includes the cover member 30 between the adjacent cell support unit 10, and by including the flip portion 32 separating the space between the electrode tabs E of the adjacent cell support units 10 from externally thereof, the flame may be prevented from being transmitted externally, and on the contrary, the flame from the inside may be released to the outside.
  • the flip portion 32 separates the space between the electrode tabs E from the outside thereof, and is pushed by the internal gas or flame of the secondary battery cell C emitted due to the rupturing of the secondary battery cell C, to be moved in position such that the space between the electrode tabs E communicates externally.
  • the cell support unit 10 accommodates the secondary battery cell C, and to this end, for example, the cell support unit 10 may include a cell support member 11 and a case member 12.
  • the cell support unit 10 of the battery module may include the cell support member 11 accommodating the secondary battery cell C on a side portion, and the case member 12 having a " ⁇ " shape and fitted to at least one of an upper end, a lower end or the upper end and the lower end of the cell support member 11 to surround a side surface portion of the secondary battery cell C.
  • the cell support member 11 has a configuration in which the secondary battery cell C is accommodated, and has a groove-shaped seating portion corresponding to the shape of the secondary battery cell C on the side surface such that the secondary battery cell C is accommodated therein.
  • the cell support member 11 may be coupled to the case member 12, and thereby, may be configured to surround the remaining side surface of the secondary battery cell C except for the electrode tab E.
  • the cell support member 11 may be coupled to a bus bar B connected to the electrode tab E of the secondary battery cell C, thereby connecting the secondary battery cell C to the outside thereof.
  • the case member 12 is coupled to the cell support member 11 and serves to surround the side surface portion of the secondary battery cell C.
  • the case member 12 may be provided to have a " ⁇ " shape, for example, and the case member 12 of the " ⁇ " shape supports may be fitted and coupled to the upper or lower end portion of the cell support member 11 provided with the secondary battery cell that is accommodated on the side surface portion thereof.
  • the body frame member 20 serves as a body of the battery module.
  • a plurality of the cell support units 10 are installed on the body frame member 20 to form a module.
  • the body frame member 20 may be in the form of a box in which a plurality of cell case units are accommodated, or may be a frame in the form of a bar in which the plurality of cell case units are connectedly tied together.
  • the cover member 30 separates the space between the electrode tabs E of neighboring cell support units 10 from the outside thereof to prevent an external flame from being transmitted to the space between the electrode tabs E. In addition, and may serve to discharge the flame or internal gas of the secondary battery cell C discharged into the space between the electrode tabs E to the outside thereof.
  • the cover member 30 is disposed between the cell support units 10 adjacent to each other, and is disposed between the electrode tabs E of the secondary battery cells C accommodated on both sides of the cell support unit 10.
  • the cover member 30 includes the flip portion 32 disposed between the electrode tabs E of the secondary battery cells C adjacent to each other, and the fixed plate portion 31 fixing the flip portion 32.
  • the fixed plate portion 31 is fixed in position between the cell support units 10 adjacent to each other, to serve to support the flip portion 32.
  • the fixed plate portion 31 forms a space between the cell support units 10 that are adjacent to each other, to reduce the transfer of heat between the secondary battery cells C mounted on the cell support units 10 adjacent to each other.
  • a cell gap formation hole 31a is formed in a central portion thereof to form a space between the cell support units 10 adjacent to each other.
  • the fixed plate portion 31 is fixed between the secondary battery cells C seated on the cell support units 10 adjacent to each other, and may form an air gap between neighboring secondary battery cells by the cell gap formation hole 31a in the central portion thereof, thereby performing a thermal insulation function.
  • the flip portion 32 normally separates the space between the electrode tabs E from the outside thereof, while in a case in which the pressure of the space between the electrode tabs E increases due to flame generation or the like of the secondary battery cell C, the space between the electrode tabs E is communicated with the outside thereof to prevent a problem in which a relatively larger explosion occurs.
  • the flip portion 32 is provided on the fixed plate portion 31, and may include a structure that is broken or bent under a certain pressure or more, and a detailed description thereof will be described later with reference to FIGS. 4 and 5 .
  • the cover member 30 of the battery module is formed of polyphenylene sulfide, or may be formed of a material including a thermosetting polymer reinforced with glass fibers.
  • restricting the material of the cover member 30 as described above is to prevent the shape of the cover member 30 from deforming due to heat, to block the propagation of external flames.
  • a heat-resistant material is presented, and for example, is limited to a material that does not melt or is not deformed in shape even when exposed at 1000°C for 10 seconds or more.
  • FIG. 4 is a plan cross-sectional view illustrating a portion of the cover member 30 in the battery module according to an exemplary embodiment
  • FIG. 5 is a perspective view illustrating the cover member 30 in the battery module according to an exemplary embodiment.
  • the flip portion 32 of the battery module is vertically coupled to the fixed plate portion 31 disposed horizontally with the secondary battery cell C.
  • the flip portion 32 is vertically coupled to the fixed plate portion 31 to form a "+" shape, a "T” shape, or the like.
  • the fabrication of the cover member 30 including the flip portion 32 and the fixed plate portion 31 may be facilitated.
  • the shape of the cover member 30 is not limited to the shape of the "+" shape, the "T” shape, or the like, and may include an angular shape such as a "Y" shape or the like.
  • the flip portion 32 of the battery module separates the space between the electrode tabs E from the outside thereof, and the discharged due to the rupturing of the secondary battery cell C, and may be broken and removed from the fixed plate portion 31 by the internal gas or flame of the secondary battery cell C discharged due to rupturing of the secondary battery cell C.
  • the flip portion 32 may be broken to be released from the coupling thereof to the fixed plate portion 31, and thus, may be separated to the outside thereof.
  • the flip portion 32 of the battery module separates the space between the electrode tabs E from the outside thereof, and one end portion of the flip portion 32 coupled to the fixed plate portion 31 is bent by an internal gas or flame of the secondary battery cell C discharged due to the rupturing of the secondary battery cell C.
  • the flip portion 32 is deformed to have a shape in which one end portion thereof is bent, and is moved to secure a path in which the internal gas or flame of the secondary battery cell C is discharged to the outside thereof, while maintaining the coupling thereof to the fixed plate portion 31.
  • the flip portion 32 of the battery module may be characterized in that a wedge groove 32b is formed in one end portion thereof coupled to the fixed plate portion 31.
  • the wedge groove 32b the breakage of the flip portion 32 by the internal gas or flame of the secondary battery cell C released due to the rupturing of the secondary battery cell C may be facilitated, or the bending of one end of the flip portion 32 may be facilitated.
  • the wedge part may be formed as a groove of a "V” shape or a "U” shape.
  • FIG. 6 is a plan cross-sectional view illustrating an embodiment in which a vent hole 32a is formed in the flip portion 32 of the cover member 30 in the battery module according to an exemplary embodiment.
  • the flip portion 32 of the battery module according to an embodiment is provided with the vent hole 32a having a width reduced from an inner surface thereof contacting the space between the electrode tabs E toward an outer surface.
  • vent hole 32a while enabling the flame to be discharged from an interior space that is a space between the electrode tabs E to the exterior space outside the space, the entry of flame into the interior space that is the space between the electrode tabs E from the exterior space may be blocked.
  • the effect of preventing the discharge of flame and the entry of flame as described above may be provided since the width of the vent hole 32a formed on the inner surface in contact with the space between the electrode tabs E is greater than the width formed on the outer surface.
  • the flame in order for the flame to enter the inner space from the outside, the flame should pass through an area of a relatively small width, and in this case, the contact area with oxygen rapidly decreases by the reduced width, and thus, the flame is dissipated to block entry thereof into the inner space.
  • the flame or heat may be discharged to the outside while preventing the dissipation of the flame.
  • FIG. 7 is a cross-sectional plan view illustrating an embodiment in which a support tab 31b is formed on the fixed plate portion 31 of the cover member 30 in the battery module according to an exemplary embodiment.
  • the fixed plate portion 31 of the battery module according to an embodiment is provided with the support tab 31b that is formed to protrude adjacent to the flip portion 32.
  • One surface of the support tab 31b may be provided to be in contact with the inner surface of the flip portion 32 in contact with the space between the electrode tabs E.
  • the flip portion 32 may be broken and removed or bent so that the internal gas or flame of the secondary battery cell C is discharged from the internal space between the electrode tabs E to the external space. Conversely, a problem in which the flip portion 32 is broken and removed or bent in order for gas or flame of the external space to enter the internal space between the electrode tabs E may be prevented.
  • one end of the flip portion 32 coupled to the fixed plate portion 31 is supported by the support tab 31b, and may thus have relatively high resistance.
  • the flip portion 32 may be broken and removed or bent with a relatively small amount of resistance force.
  • a battery module according to an embodiment has an advantage of preventing ignition propagation of secondary battery cells.
  • the battery module according to an embodiment has an advantage of reducing flame when the secondary battery cell is ignited.
  • the battery module prevents the problem that when a plurality of secondary battery cells are mounted as in an energy storage system (ESS) or the like, the explosion of any one secondary battery cell is propagated to other secondary battery cells therearound, causing a chain explosion.
  • ESS energy storage system

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Battery Mounting, Suspending (AREA)
  • Gas Exhaust Devices For Batteries (AREA)
EP20211861.8A 2019-12-04 2020-12-04 Module de batterie Pending EP3832787A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020190159872A KR20210069975A (ko) 2019-12-04 2019-12-04 배터리 모듈

Publications (1)

Publication Number Publication Date
EP3832787A1 true EP3832787A1 (fr) 2021-06-09

Family

ID=73726634

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20211861.8A Pending EP3832787A1 (fr) 2019-12-04 2020-12-04 Module de batterie

Country Status (4)

Country Link
US (1) US20210175484A1 (fr)
EP (1) EP3832787A1 (fr)
KR (1) KR20210069975A (fr)
CN (1) CN112909399B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102580847B1 (ko) * 2018-04-26 2023-09-19 에스케이온 주식회사 배터리 랙
CN118263595A (zh) * 2022-12-27 2024-06-28 蔚来电池科技(安徽)有限公司 电池包箱体和电池包

Citations (4)

* Cited by examiner, † Cited by third party
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